Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/37441
Title: CDs como lentes difrativas
Other Titles: CDs as diffractive lenses
Keywords: Difração da luz
Ensino de óptica
Óptica física
CD como rede de difração
Fenda circular
Light diffraction
Teaching of optics
Optical physics
CD as a diffraction grating
Circular slit
Issue Date: 2010
Publisher: Sociedade Brasileira de Física
Citation: CATELLI, F.; LIBARDI, H. CDs como lentes difrativas. Revista Brasileira de Ensino de Física, São Paulo, v. 32, n. 2, p. 1-6, abr./jun. 2010. DOI: http://dx.doi.org/10.1590/S1806-11172010000200007
Abstract: Didactic activities involving the use of CDs as diffraction grattings are not new. The preparation of simple portable spectroscopes and the projection of spectra for large audiences are some of the suggestions for use. A overhead projector as light source, along with a circular slit, is also suggested. The advantages of this assembly are the very simple interpretation of the diffraction figure obtained. A small change in the assembly suggested here allows for accurate measure of the distance between adjacent tracks of a recordable CD. The didactic dividends can be earned from the exploitation of objects of everyday life (in this case, the CD) goes from active learning to the "resolution" of the everyday objects as generators of reflection, inquiry and awareness.
URI: http://repositorio.ufla.br/jspui/handle/1/37441
Appears in Collections:DEX - Artigos publicados em periódicos

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